i’m using an ARM64-2GB instances and I try to secured it a little bit more!
So I setup inbound rules like this :
Inbound default policy : Drop
- Accept TCP 22
- Accept TCP/UDP 443
- Accept TCP/UDP 80
- Accept TCP/UDP 53
Outbound rules (by default with smtp disabled): Accept
With this setup, I’m not able to reach any site from the server (apt-get, curl or wget) DNS request seems to be broken:
Message example from apt-get : Failed to fetch http://httpredir.debian.org/debian/dists/buster/InRelease Could not resolve ‘httpredir.debian.org’
If I update the setup with “Inbound default policy : Accept”, all is working well…
Did I do something wrong in the setup or is there a bug ?
thanks for your help,